Has anyone tracked traffic or brand mentions from AI search after implementing GEO?

I’m curious how people are measuring the impact of Generative Engine Optimization (GEO).

For traditional SEO, we can track rankings, organic traffic, impressions, clicks, and conversions through tools like Google Search Console and Google Analytics. But AI search seems more difficult to measure.

**For those who have experimented with GEO, have you tracked things like:**

1. Brand mentions in ChatGPT, Gemini, Perplexity, or Google AI results?

2. How often is your website/content gets cited?

3. Referral traffic from AI platforms?

4. Changes in branded search volume?

5. Conversions or leads that appear to originate from AI search?

6. Which content formats seem to get mentioned most frequently?

I’d also be interested in knowing what measurement process or tools you’re using.

Have you seen measurable changes after implementing GEO, or is it still too early to attribute traffic and conversions to AI search?